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地方本科院校工学专业毕业生就业与专业相关性实证研究

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创新创业理论研究与实践 2024年第8期7卷 79-81页

作者：郭绍星曹庆楼陈芳芳黔南民族师范学院贵州都匀558000

毕业生就业与专业的相关性已经成为影响高质量就业的重要因素。该文利用某地方本科院校2023届毕业生就业调研数据,通过相关性检验及线性回归分析探索了该院校4个工学专业毕业生就业与专业相关性的影响因素及关联程度。通过数据分析,发... 详细信息

毕业生就业与专业的相关性已经成为影响高质量就业的重要因素。该文利用某地方本科院校2023届毕业生就业调研数据,通过相关性检验及线性回归分析探索了该院校4个工学专业毕业生就业与专业相关性的影响因素及关联程度。通过数据分析,发现该院校工学专业毕业生就业与专业的相关性从2021年的77.06%下降到了2023年的68.65%。研究发现:个人情况类、专业情况类和工作情况类3类变量对毕业生就业与专业相关性都有着不同程度的影响。

关键词：地方院校本科工学专业高校毕业生就业相关性

超声引导下双侧椎板后阻滞对体外循环下心脏瓣膜置换术患者术后镇痛及心肌保护的影响

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重庆医学 2024年第12期53卷 1828-1833页

作者：王棣馨曹慧灵孙燕刘少星成都市第二人民医院麻醉科成都610083

目的探讨超声引导下双侧椎板后阻滞(RLB)对体外循环(CPB)下心脏瓣膜置换术患者术后镇痛及心肌保护的影响。方法选取该院2022年5月至2023年3月拟在CPB下行瓣膜置换术的70例患者为研究对象,采用随机数字表法分为单纯全身麻醉组(A组)和超... 详细信息

目的探讨超声引导下双侧椎板后阻滞(RLB)对体外循环(CPB)下心脏瓣膜置换术患者术后镇痛及心肌保护的影响。方法选取该院2022年5月至2023年3月拟在CPB下行瓣膜置换术的70例患者为研究对象,采用随机数字表法分为单纯全身麻醉组(A组)和超声引导下双侧RLB复合全身麻醉组(B组),每组35例。A组无特殊处理;B组患者麻醉诱导前在超声引导下经第4胸椎椎板水平行双侧RLB。所有患者手术结束后均使用患者自控静脉镇痛(PCIA)泵。记录两组患者麻醉诱导前(T_(0))、插管时(T_(1))、切开胸骨时(T_(2))、CPB前(T_(3))、CPB停止10 min时(T_(4))及手术结束后5 min时(T_(5))的平均动脉压(MAP)及心率(HR);记录两组患者术后首次清醒时间、拔管时间及拔管后在静息、咳嗽两种状态下的数字疼痛量表(NRS)评分;记录两组患者术中舒芬太尼用量、拔管后用于补救镇痛的羟考酮用量;于T_(0)、CPB开始后30 min(T_(6))、CPB结束后30 min(T_(7))、术后24 h(T_(8))、术后48 h(T_(9))时采用ELISA检测丙二醛(MDA)、超氧化物歧化酶(SOD)、心肌肌钙蛋白I(cTnI)和肌酸激酶同工酶(CK-MB)水平;记录两组患者恶心呕吐、穿刺部位感染、局部麻醉药中毒及穿刺损伤等不良事件发生情况。结果与A组比较,B组在T_(1)、T_(2)和T_(3)时MAP及HR明显降低;术后首次清醒时间及拔管时间均提前;拔管后静息、咳嗽NRS评分明显降低;舒芬太尼、羟考酮用量均减少;T_(6)、T_(7)、T_(8)时MDA、cTnI和CK-MB水平明显降低,SOD水平明显升高,差异有统计学意义(P<0.05)。两组患者均无恶心呕吐、穿刺部位感染、局部麻醉药中毒及穿刺损伤等不良事件的发生。结论超声引导下双侧RLB可稳定CPB心脏瓣膜置换术患者术中血流动力学及提供完善的镇痛,同时减轻应激反应,起到一定的心肌保护作用。

关键词：超声椎板后阻滞瓣膜置换术术后镇痛心肌保护

维生素B_(12)对产蛋期五龙鹅产蛋性能、蛋品质、血清生化和抗氧化指标的影响

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动物营养学报 2024年第8期36卷 5067-5075页

作者：谭绍兴王宝维张名爱凡文磊岳斌孔敏王秉翰青岛农业大学动物科技学院青岛266109 青岛农业大学优质水禽研究所青岛266109 青岛慧和生物科技有限公司青岛266109

本试验旨在研究饲粮中添加不同水平维生素B_(12)对产蛋鹅产蛋性能、蛋品质、血清生化和抗氧化指标的影响。选择34周龄产蛋期五龙鹅180只,随机分为6组,每组6个重复,每个重复5只鹅(1公4母)。各组饲粮中维生素B_(12)添加水平分别为0(对照组... 详细信息

本试验旨在研究饲粮中添加不同水平维生素B_(12)对产蛋鹅产蛋性能、蛋品质、血清生化和抗氧化指标的影响。选择34周龄产蛋期五龙鹅180只,随机分为6组,每组6个重复,每个重复5只鹅(1公4母)。各组饲粮中维生素B_(12)添加水平分别为0(对照组)、12.5、25.0、37.5、50.0、62.5μg/kg。预试期1周,正试期16周。结果表明:1)与对照组相比,12.5、25.0、37.5、50.0和62.5μg/kg维生素B_(12)组的平均日采食量显著升高(P<0.05),25.0、37.5、62.5μg/kg维生素B_(12)组的产蛋率和产蛋数显著升高(P<0.05)。2)与对照组相比,12.5、25.0、37.5、50.0和62.5μg/kg维生素B_(12)组的蛋壳强度显著升高(P<0.05),25.0、37.5、50.0、62.5μg/kg维生素B_(12)组的蛋壳厚度显著升高(P<0.05)。3)与对照组相比,12.5、25.0、37.5、50.0和62.5μg/kg维生素B_(12)组的血清总胆固醇(T-CHO)和低密度脂蛋白胆固醇(LDL-C)含量显著降低(P<0.05),25.0和37.5μg/kg维生素B_(12)组的血清白蛋白(ALB)含量显著升高(P<0.05)。4)与对照组相比,25.0和37.5μg/kg维生素B_(12)组的血清总抗氧化能力(T-AOC)显著升高(P<0.05),12.5、25.0、37.5、50.0和62.5μg/kg维生素B_(12)组的血清谷胱甘肽过氧化物酶(GSH-Px)活性显著升高(P<0.05)。综上所述,饲粮中添加维生素B_(12)可提高产蛋期五龙鹅产蛋性能、蛋品质,调节血清生化指标,增强抗氧化能力。本试验条件下,饲粮中维生素B_(12)适宜添加水平为25.0μg/kg。

关键词：维生素B_(12) 产蛋期五龙鹅产蛋性能蛋品质血清生化指标抗氧化能力

The influence of manufacturing parameters and adding support layer on the properties of Zirfon separators

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Frontiers of Chemical Science and Engineering 2014年第3期8卷 295-305页

作者： Li XU Yue YU Wei LI Yan YOU Wei XU shaoxing ZHANG School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China Tianjin Key Laboratory of Membrane Science and Desalination Technology Tianjin University Tianjin 300072 China Research and Development Department Tianjin Mainland Hydrogen Equipment Co. Ltd. Tianjin 301609 China

The composite separator comprising of polysulfone and zirconia was prepared by phase inversion precipitation technique. The influence of manufacturing parameters on its properties was investigated, and the results show that the manufacturing parameters affect the ionic resistance and maximum pore size significantly. A modified composite separator with a support layer was prepared to enhance the tensile strength of separator. By adding support layer, the tensile strength of the separator increases from 1.85MPa to 13.66MPa. In order to evaluate the practical applicability of the composite separator, a small-scale industrial electrolytic experiment was conducted to investigate the changes of cell voltage, gas purity and separator stability. The results show that the modified composite separator has a smaller cell voltage and a higher H2 purity than the asbestos separator, and are promising material for industrial hydrogen production.

关键词： separator alkaline water electrolysis manufacturing parameters support layer

A NUMERICAL STUDY OF INDENTATION WITH SMALL SPHERICAL INDENTERS

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Acta Mechanica Solida Sinica 2009年第1期22卷 18-26页

作者： Jiang Qin shaoxing Qu Xue Feng Yonggang Huang Jianliang Xiao Keh-Chih Hwang Department of Engineering Mechanics Tsinghua University Beijing 100084 China Department of Mechanics Zhejiang University Hangzhou 310027 China Department of Civil and Environmental Engineering Northwestern University Evanston IL 60208 USA Department of Mechanical Engineering Northwestern University Evanston IL 60208 USA

The finite element method for the conventional theory of mechanism-based strain gradient plasticity is used to study the indentation size effect. For small indenters （e.g., radii on the order of 10μm）, the maximum allowable geometrically necessary dislocation （GND） density is introduced to cap the GND density such that the latter does not become unrealistically high. The numerical results agree well with the indentation hardness data of iridium. The GND density is much larger than the density of statistically stored dislocations （SSD） underneath the indenter, but this trend reverses away from the indenter. As the indentation depth （or equivalently, contact radius） increases, the GND density decreases but the SSD density increases.

关键词： indentation size effect spherical indenters geometrically necessary dislocations,maximum density

RATE DEPENDENT STRESS-STRETCH RELATION OF DIELECTRIC ELASTOMERS SUBJECTED TO PURE SHEAR LIKE LOADING AND ELECTRIC FIELD

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Acta Mechanica Solida Sinica 2012年第5期25卷 542-549页

作者： shaoxing Qu Ke Li Tiefeng Li Hanqing Jiang Miao Wang Zhenhua Li Department of Engineering Mechanics Zhejiang UniversityHangzhou 310027China Soft Matter Research Center(SMRC) Zhejiang UniversityHangzhou 310027China School for Engineering of Matter Transport and Energy~4rizona State UniversityTemPeAZ 85287USA Department of Physics Zhejiang UniversityHangzhou 310027China

The performance of dielectric elastomer （DE） transducers is significantly affected by viscoelastic relaxation-induced electromechanical dissipations. This paper presents an experi- mental study to obtain the rate dependent stress-stretch relation of DE membranes （VHBTM9473） subjected to pure shear like loading and electric loading simultaneously. Stretching rate depen- dent behavior is observed. The results also show that the tensile force decreases as the voltage increases. The observations are compared with predictions by a viscoelastic model of DE. This experiment may be used for further studies of dynamic electromechanical coupling properties of DEs.

关键词： dielectric elastomer viscoelastic electromechanical coupling membranes

乳腺癌患者HPV感染的临床病理特征及与p53蛋白表达的相关性研究

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中国校医 2024年第6期38卷 462-464,479页

作者：关津京崔珂珂张绍星薛小青平顶山市妇幼保健院病理科河南平顶山467000 襄城县人民医院病理科河南襄城452670 平顶山市第一人民医院病理科河南平顶山467000

目的观察乳腺癌患者人乳头状瘤病毒(HPV)感染的临床病理特征及与p53蛋白表达的相关性。方法选取180例乳腺癌患者,根据其是否感染HPV分为感染组(n=91)和未感染组(n=89),比较2组患者癌组织和癌旁组织的p53蛋白表达水平、临床病理特征、生... 详细信息

目的观察乳腺癌患者人乳头状瘤病毒(HPV)感染的临床病理特征及与p53蛋白表达的相关性。方法选取180例乳腺癌患者,根据其是否感染HPV分为感染组(n=91)和未感染组(n=89),比较2组患者癌组织和癌旁组织的p53蛋白表达水平、临床病理特征、生存情况,以及2组不同临床病理特征的p53蛋白表达水平。结果感染组组织学分级、病理分期与未感染组相比,差异均有统计学意义(P均<0.05);感染组淋巴结转移占65.93%,高于未感染组的43.82%(χ^(2)=8.890,P<0.01)。感染组累积生存率、无进展生存率分别为82.26%、66.13%,低于未感染组的95.16%、90.32%,差异均有统计学意义(log-rank χ^(2)=5.766、13.220,P均<0.001)。感染组患者癌组织及癌旁组织的p53蛋白表达水平分别为0.58(0.45~0.60)、0.24(0.21~0.28),未感染组分别为0.42(0.35~0.46)、0.21(0.18~0.25),差异均有统计学意义(Z=8.525、2.923,P均<0.01)。感染组与未感染组在肿瘤直径、组织学分级、病理分期、有无淋巴结转移的p53蛋白表达水平比较,差异均有统计学意义(P均<0.05)。结论乳腺癌患者HPV感染率较高,HPV感染可能促使p53蛋白突变,促进乳腺癌恶性发展。

关键词：乳腺肿瘤人乳头状瘤病毒感染临床病理特征 p53

SOME APPROACHES TO THE MAIN TYPES OF CHINESE ENDANGERED PLANTS

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Journal of Geographical Sciences 1991年第2期2卷 57-67页

作者： Chen shaoxing Zhang Yuanzhen Wang Ning Beijing Natural History Museum

The authors divide the 388 species of endangered plants recorded in the first volume of China Plant Red Data Book into 7 types:*** fossils;*** relics;*** of only a small range;*** genus;*** important element of the fl... 详细信息

关键词： flora endangered plants endemics

Phase velocity maps of Rayleigh waves in the Ordos block and adjacent regions

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Earthquake Science 2018年第5期31卷 234-241页

作者： shaoxing Hui Wenhua Yan Yifei Xu Liping Fan Hongwu Feng Shaanxi Earthquake Agency Xi'an 710068China Institute of Geophysics China Earthquake AdministrationBeijing 100081China

We analyze continuous waveform data from 257 broadband stations of the portable seismic array deployed under the "China Seismic Array-northern part of NS seismic belt" project as well as data from a permanent seismic network from January 2014 to December 2015. The phase velocity dispersion curve of 7,185 Rayleigh waves is obtained with a method based on the image analysis of phase velocity extraction, and the inversion is obtained. The period of Rayleigh wave phase velocity distribution has a range of 5–40 s, and minimum resolution close to 20 km. The results show that the phase velocity structure image well reflects the geological structural characteristics of the crust and uppermost mantle, and that the phase velocity distribution has obvious lateral heterogeneity. The phase velocity of the 5–15 s period is closely linked to the surface layer and sedimentary layer, the low-velocity anomalies correspond to loose sedimentary cover, and the high-velocity anomalies correspond to orogenic belts and uplifts and the boundary between high and low velocity anomalies is consistent with the block boundary. The phase velocity of the 5–15 s period is strongly affected by the crust layer thickness, the northeastern Tibetan plateau has low-velocity anomalies in the middle to lower crust, the west side of the Ordos block is consistent with the northeastern Tibetan plateau, which may imply the material exchange and fusion in this area. The velocity variation is inversely related to the Moho depth in the 40 s period of Swave, and the lateral velocity heterogeneity represents the lateral variation of the Moho depth. The Ordos block and the northern margin of Sichuan basin are located in the uppermost mantle at this depth, and the depth in the transition zone is still located in the lower crust.

关键词： Ordos block ambient noise tomography Rayleigh wave phase velocity